Jin Seo Yoon, born Jin Bo Ra and known professionally as Sunday, is a South Korean singer and musical actress. She attended the Theater program at Chung-Ang University but is officially on a leave-of-absence. She debuted in 2004 as a soloist in Japan with the release of the digital single "リラの片想い" (Rira no Kataomoi). The following year, she released a second digital single before eventually returning to South Korea and joining THE GRACE. The group was created by SM Entertainment as a female counterpart to TVXQ but despite releasing some singles and three studio albums, the group never gained the popularity of their male peers. The group stopped promoting in early 2010 and went into indefinite hiatus. In 2011, she returned, alongside fellow member Dana, as the sub-unit Dana & Sunday but, after releasing some digital singles, they too ended promotions. In 2016, after a 5-year hiatus, she returned with the single "Still" in a collaboration between her and DickPunk's Kim Tae Hyun. In 2021, she ended her contract with SM Entertainment and now continues her career in musical theater.

(Source: Korean = Namu Wiki || Translation = MyDramaList) Edit Biography